Home / 138,598.28-191,196.90-86,906.24

Finding the Fourth Proportional to 138,598.28, 191,196.90 and 86,906.24

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Solution

The fourth proportional to 138,598.28, 191,196.90 and 86,906.24 is: 119,887.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,598.28 : 191,196.90 = 86,906.24 : x
  2. Step 2: Convert to fraction form
    138,598.28/191,196.90 = 86,906.24/x
  3. Step 3: Cross multiply
    138,598.28x = 191,196.90 × 86,906.24
  4. Step 4: Simplify right side
    138,598.28x = 16,616,203,678.66
  5. Step 5: Solve for x
    x = 16,616,203,678.66/138,598.28
  6. Step 6: Final answer
    x = 119,887.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.